RPS 090_C - Abbeyleix House, Abbeyleix Demesne, Abbeyleix

Research metadata

RPS Ref. No.: RPS 090_C / RPS-090-C (row title / planning notice) ([1])
Overall identification confidence: Medium — the address and RPS reference identify Abbeyleix House, but the active row’s NIAH number differs from the Buildings of Ireland record found for Abbey Leix / Abbeyleix House.
Vacancy / dereliction status at a glance: No verified vacancy or dereliction signal found in this pass. The NIAH record states “In Use As: Country house”, and the 2023 planning record concerns alterations to the protected main house rather than dereliction or vacancy. ([1]) ([2])

Quick facts

Address / Eircode	Abbeyleix House, Abbeyleix Demesne, Abbeyleix, Co. Laois. Eircode not verified.
Building type	Detached Classical-style country house / country house estate.
Period / date	Built 1773–1778 / 1770–1780 period.
Heritage refs (RPS / NIAH)	RPS 090_C / RPS-090-C; NIAH match found as Reg. No. 12802950. Active row records NIAH No. 12802350 — resolve discrepancy.
Apparent status	Occupied / in use as country house, based on NIAH “In Use As” record and no contrary evidence found.
On Derelict Sites Register?	Unknown / not verified in this pass.
On Vacant Sites Register?	Unknown / not verified in this pass.
Owner	John Collison is reported as owner by Wikipedia, citing Irish Times / Irish Independent reporting; verify against land/registry records before relying on ownership operationally.

Summary

Abbeyleix House is a nationally rated Classical-style country house in Abbeyleix Demesne, built in the 1770s and associated with James Wyatt / Sir William Chambers and later Thomas Henry Wyatt refacing. ([2]) It is treated in a 2023 planning notice as a protected structure, RPS-090-C, within Abbeyleix Estate. ([1]) No verified current dereliction signal was found in this pass; available sources indicate an active country-house use and recent permission for alterations rather than enforcement.

Identification

Address: Abbeyleix House, Abbeyleix Demesne, Abbeyleix, Co. Laois. ([1])
Eircode: Unverified.
Building type(s): Detached seven-bay, three-storey over basement Classical-style country house with dormer attic and pedimented breakfront. ([2])
Approx. date of construction / period: Built 1773–1778; NIAH date range 1770–1780. ([2])
Architect / builder: NIAH states designed by James Wyatt and refaced by Thomas Henry Wyatt; Wikipedia also associates the 1773 house with James Wyatt and Sir William Chambers. ([2]) ([3])
RPS / NIAH / other heritage references: RPS-090-C in the 2023 planning notice; NIAH matching record located as Reg. No. 12802950, National rating. ([1]) ([2])
Coordinates (lat, long) / map link: Wikipedia gives 52.8962, -7.3750; NIAH gives Irish Grid coordinates 242258, 182967. ([2]) ([3])
Building-match confidence & ambiguity notes: Medium. The address and RPS reference strongly identify Abbeyleix House / Abbey Leix, but the active row’s NIAH number should be checked because the Buildings of Ireland result found is 12802950, not 12802350.

History & Significance

Abbeyleix House was the seat of the Viscounts de Vesci and is associated with the planned estate town of Abbeyleix. ([3])